From e13b395676a5e5bdd17e0561bdb849faecae9c4d Mon Sep 17 00:00:00 2001
From: Mikel Parra <mikel.parra@beezy.net>
Date: Wed, 16 Jun 2021 18:46:46 +0200
Subject: [PATCH] feat: add compound components

---
 README.md                               |  69 ++++++----
 src/Example.js                          |  73 ++++------
 src/lib/clamp.js                        | 173 ++++++++++++++----------
 src/lib/showLess.js                     |  25 ++++
 src/lib/showMore.js                     |  25 ++++
 src/lib/text.js                         |  20 +++
 src/lib/utils/cloneReactElement.js      |   9 ++
 src/lib/utils/orchestrateClickEvents.js |   7 +
 8 files changed, 253 insertions(+), 148 deletions(-)
 create mode 100644 src/lib/showLess.js
 create mode 100644 src/lib/showMore.js
 create mode 100644 src/lib/text.js
 create mode 100644 src/lib/utils/cloneReactElement.js
 create mode 100644 src/lib/utils/orchestrateClickEvents.js

diff --git a/README.md b/README.md
index c0d3808..80fe446 100644
--- a/README.md
+++ b/README.md
@@ -10,15 +10,26 @@ React component that uses the css line clamping to truncate given text in specif
 -   😱 It works both with plain text and HTML/Components
 -   💥 Integrated show more/less behaviour
 -   👂 Listens to text and lines changes and responds accordingly
--   ⚙️ Easy-to-use component API
--   🌳 Tiny size, only 1.4kb
-
+-   ⚙️ Easy-to-use Composable component API
+-   🌳 Tiny size
 ## Installation
 
 ```shell
 npm install react-multiline-clamp
 ```
 
+### The library gives you three composable components to use inside the Clamp component as children
+
+- Clamp.Text
+- Clamp.ShowMore
+- Clamp.ShowLess
+
+<br />
+
+You can compose this three components inside the Clamp in the order you desire, this way you can put the show more/less elements above the text for example.
+
+<br />
+
 ### Basic example
 
 ```jsx
@@ -27,7 +38,9 @@ import Clamp from 'react-multiline-clamp';
 const MyComponent = () => {
     return (
         <Clamp withTooltip lines={2}>
-            <p>Multiline text</p>
+            <Clamp.Text>
+                <p>Multiline text</p>
+            </Clamp.Text>
         </Clamp>
     );
 };
@@ -40,39 +53,35 @@ import Clamp from 'react-multiline-clamp';
 
 const MyComponent = () => {
     return (
-        <Clamp
-            lines={2}
-            maxLines={6}
-            withToggle
-            showMoreElement={({ toggle }) => (
-                <button type="button" onClick={toggle}>
+        <Clamp lines={2} maxLines={6} withToggle>
+            <Clamp.Text>
+                <p>Multiline text</p>
+            </Clamp.Text>
+
+            <Clamp.ShowMore>
+                <button type="button" onClick={() => console.log("Custom event")}>
                     Show more
                 </button>
-            )}
-            showLessElement={({ toggle }) => (
-                <span type="button" onClick={toggle}>
-                    menossssss
-                </span>
-            )}
-        >
-            <p>Multiline text</p>
-        </Clamp>
+            </Clamp.ShowMore>
+
+            <Clamp.ShowLess />
+      </Clamp>
     );
 };
 ```
-
 ## API
 
-|      Name       |          Type           |               Default               |                                                                   Description                                                                   |
-| :-------------: | :---------------------: | :---------------------------------: | :---------------------------------------------------------------------------------------------------------------------------------------------: |
-|    children     |         Element         |                                     |                    The expected element to which the ellipsis would be applied. It could be plain text or any HTML/Component                    |
-|      lines      |         Number          |                  2                  |                                             The number of lines we want the text to be truncated to                                             |
-|    maxLines     |         Number          |                  8                  |                                  The maximum number of lines we want to show after clicking on showMore button                                  |
-|   withTooltip   |         Boolean         |                true                 |                                              Indicates if we want the text to have a tooltip title                                              |
-|   withToggle    |         Boolean         |                false                |                                             Indicates if we want to have the show more/less actions                                             |
-| showMoreElement |         Element         | <button type="button">More</button> |                                                   Element that triggers the show more action                                                    |
-| showLessElement |         Element         | <button type="button">Less</button> |                                                   Element that triggers the show less action                                                    |
-|   onShowMore    | (isExpanded) => Boolean |              () => {}               | A callback function that gets calls every time we click on the show more/less buttons. It returns whether the text is expanded or not (Boolean) |
+|      Name        |          Type           |               Default               |                                                                   Description                                                                   |
+| :-------------:  | :---------------------: | :---------------------------------: | :---------------------------------------------------------------------------------------------------------------------------------------------: |
+|    children      |         Element         |                                     |                    The expected element to which the ellipsis would be applied. It could be plain text or any HTML/Component                    |
+|      lines       |         Number          |                  2                  |                                             The number of lines we want the text to be truncated to                                             |
+|    maxLines      |         Number          |                  8                  |                                  The maximum number of lines we want to show after clicking on showMore button                                  |
+|   withTooltip    |         Boolean         |                true                 |                                              Indicates if we want the text to have a tooltip title                                              |
+|   withToggle     |         Boolean         |                false                |                                             Indicates if we want to have the show more/less actions                                             |
+|   Clamp.Text     |         Element         |                                     |                                                   Component to put the text you want to apply the ellipsis to                                   |
+|   Clamp.ShowMore |         Element         |              button                 |                                                   Component render the show more element                                                        |
+|   Clamp.ShowLess |         Element         |              button                 |                                                   Component render the show less element                                                        |
+|   onShowMore     | (isExpanded) => Boolean |              () => {}               | A callback function that gets calls every time we click on the show more/less buttons. It returns whether the text is expanded or not (Boolean) |
 
 #### [See browser support](https://caniuse.com/#feat=mdn-css_properties_-webkit-line-clamp)
 
diff --git a/src/Example.js b/src/Example.js
index fd7965b..a6c7f71 100644
--- a/src/Example.js
+++ b/src/Example.js
@@ -1,5 +1,5 @@
-import React, { useState } from 'react';
-import Clamp from './lib';
+import React, { useState } from "react";
+import Clamp from "./lib";
 
 const initialText = `Lorem ipsum dolor sit amet consectetur adipisicing elit.
 Illum perspiciatis ea consequuntur ipsum deleniti placeat
@@ -11,49 +11,36 @@ dignissimos dolor facere officia delectus corrupti
 perferendis laboriosam deserunt nobis, suscipit autem atque?`;
 
 function Example() {
-    const [text, setText] = useState(initialText);
-    const [lines, setLines] = useState(2);
+  const [text, setText] = useState(initialText);
+  const [lines, setLines] = useState(2);
 
-    return (
-        <div>
-            <h1>Multiline clamp example</h1>
-            <div>
-                <textarea
-                    value={text}
-                    cols={4}
-                    rows={4}
-                    onChange={ev => setText(ev.target.value)}
-                    style={{ width: '100%', height: '150px' }}
-                />
-            </div>
-            <div>
-                <input
-                    type="text"
-                    value={lines}
-                    onChange={ev => setLines(ev.target.value)}
-                />
-            </div>
+  return (
+    <div>
+      <h1>Multiline clamp example</h1>
+      <div>
+        <textarea
+          value={text}
+          cols={4}
+          rows={4}
+          onChange={(ev) => setText(ev.target.value)}
+          style={{ width: "100%", height: "150px" }}
+        />
+      </div>
+      <div>
+        <input
+          type="text"
+          value={lines}
+          onChange={(ev) => setLines(ev.target.value)}
+        />
+      </div>
 
-            <Clamp
-                showMoreElement={({ toggle }) => (
-                    <button type="button" onClick={toggle}>
-                        Show more
-                    </button>
-                )}
-                showLessElement={({ toggle }) => (
-                    <span type="button" onClick={toggle}>
-                        menossssss
-                    </span>
-                )}
-                lines={lines}
-                maxLines={8}
-                withToggle
-                onShowMore={show => console.log(show)}
-            >
-                <p>{text}</p>
-            </Clamp>
-        </div>
-    );
+      <Clamp lines={lines} maxLines={8}>
+        <Clamp.Text>
+          <p>{text}</p>
+        </Clamp.Text>
+      </Clamp>
+    </div>
+  );
 }
 
 export default Example;
diff --git a/src/lib/clamp.js b/src/lib/clamp.js
index 0ea0901..8c6b924 100755
--- a/src/lib/clamp.js
+++ b/src/lib/clamp.js
@@ -1,81 +1,104 @@
-import React, { useState, Fragment, useEffect } from 'react';
-import isCssEllipsisApplied from './utils/isCssEllipsisApplied';
-import TruncatedElement from './truncatedElement';
-
-const defaultShowMoreElement = ({ toggle }) => (
-    <button type="button" onClick={toggle}>
-        More
-    </button>
-);
-
-const defaultShowLessElement = ({ toggle }) => (
-    <button type="button" onClick={toggle}>
-        Less
-    </button>
-);
+import React, { useState, useEffect, useContext, createContext } from "react";
+import PropTypes from "prop-types";
+import isCssEllipsisApplied from "./utils/isCssEllipsisApplied";
+import TruncatedText from "./text";
+import ShowMore from "./showMore";
+import ShowLess from "./showLess";
+
+const ClampContext = createContext();
+
+export const useClampContext = () => {
+  const context = useContext(ClampContext);
+
+  if (!context) {
+    throw new Error(
+      `Clamp show more/less components cannot be rendered outside the Clamp component`
+    );
+  }
+
+  return context;
+};
 
 const Clamp = ({
-    children,
-    lines = 2,
-    maxLines = 8,
-    withTooltip = true,
-    withToggle = false,
-    showMoreElement = defaultShowMoreElement,
-    showLessElement = defaultShowLessElement,
-    onShowMore = () => {}
+  children,
+  lines,
+  maxLines,
+  withTooltip,
+  withToggle,
+  onShowMore
 }) => {
-    const [sLines, setLines] = useState(lines);
-    const [isExpanded, setIsExpanded] = useState(false);
-    const [showMore, setShowMore] = useState(false);
-
-    const handleToggleShowMore = show => {
-        const newLines = show ? maxLines : lines;
-
-        setShowMore(showMore => !showMore);
-        setIsExpanded(isExpanded => !isExpanded);
-        setLines(newLines);
-
-        onShowMore(show);
-    };
-
-    const handleConfigElement = elem => {
-        if (!elem) return;
-
-        if (isCssEllipsisApplied(elem)) {
-            if (withTooltip) {
-                const title = elem.textContent;
-                elem.setAttribute('title', title);
-            }
-
-            if (withToggle && !showMore && !isExpanded) {
-                setShowMore(true);
-            }
-        } else {
-            elem.removeAttribute('title');
-            setShowMore(false);
-        }
-    };
-
-    useEffect(() => {
-        if (lines) {
-            setLines(lines);
-        }
-    }, [lines]);
-
-    return (
-        <Fragment>
-            <TruncatedElement lines={sLines} getRef={handleConfigElement}>
-                {children}
-            </TruncatedElement>
-
-            {showMore &&
-                !isExpanded &&
-                showMoreElement({ toggle: () => handleToggleShowMore(true) })}
-
-            {isExpanded &&
-                showLessElement({ toggle: () => handleToggleShowMore(false) })}
-        </Fragment>
-    );
+  const [sLines, setLines] = useState(lines);
+  const [isExpanded, setIsExpanded] = useState(false);
+  const [showMore, setShowMore] = useState(false);
+
+  const handleToggleShowMore = () => {
+    const newLines = showMore ? maxLines : lines;
+
+    setShowMore(!showMore);
+    setIsExpanded(!isExpanded);
+    setLines(newLines);
+
+    onShowMore(showMore);
+  };
+
+  const handleConfigElement = (elem) => {
+    if (!elem) return;
+
+    if (isCssEllipsisApplied(elem)) {
+      if (withTooltip) {
+        const title = elem.textContent;
+        elem.setAttribute("title", title);
+      }
+
+      if (withToggle && !showMore && !isExpanded) {
+        setShowMore(true);
+      }
+    } else {
+      elem.removeAttribute("title");
+      setShowMore(false);
+    }
+  };
+
+  useEffect(() => {
+    if (lines) {
+      setLines(lines);
+    }
+  }, [lines]);
+
+  return (
+    <ClampContext.Provider
+      value={{
+        toggle: handleToggleShowMore,
+        showMore,
+        isExpanded,
+        lines: sLines,
+        configElement: handleConfigElement
+      }}
+    >
+      {children}
+    </ClampContext.Provider>
+  );
 };
 
+Clamp.propTypes = {
+  children: PropTypes.element.isRequired,
+  lines: PropTypes.number,
+  maxLines: PropTypes.number,
+  withTooltip: PropTypes.bool,
+  withToggle: PropTypes.bool,
+  onShowMore: PropTypes.func
+};
+
+Clamp.defaultProps = {
+  lines: 2,
+  maxLines: 8,
+  withTooltip: true,
+  withToggle: false,
+  onShowMore: () => {}
+};
+
+Clamp.Text = TruncatedText;
+Clamp.ShowMore = ShowMore;
+Clamp.ShowLess = ShowLess;
+
 export default Clamp;
diff --git a/src/lib/showLess.js b/src/lib/showLess.js
new file mode 100644
index 0000000..8f8f8ce
--- /dev/null
+++ b/src/lib/showLess.js
@@ -0,0 +1,25 @@
+import React from "react";
+import PropTypes from "prop-types";
+import { useClampContext } from "./clamp";
+import cloneReactElement from "./utils/cloneReactElement";
+import orchestrateClickEvents from "./utils/orchestrateClickEvents";
+
+const ShowLess = ({ children }) => {
+  const { toggle, isExpanded } = useClampContext();
+
+  return isExpanded
+    ? cloneReactElement(children, {
+        onClick: () => orchestrateClickEvents(children.props.onClick, toggle)
+      })
+    : null;
+};
+
+ShowLess.propTypes = {
+  children: PropTypes.element
+};
+
+ShowLess.defaultProps = {
+  children: <button type="button">Less</button>
+};
+
+export default ShowLess;
diff --git a/src/lib/showMore.js b/src/lib/showMore.js
new file mode 100644
index 0000000..a777c51
--- /dev/null
+++ b/src/lib/showMore.js
@@ -0,0 +1,25 @@
+import React from "react";
+import PropTypes from "prop-types";
+import { useClampContext } from "./clamp";
+import orchestrateClickEvents from "./utils/orchestrateClickEvents";
+import cloneReactElement from "./utils/cloneReactElement";
+
+const ShowMore = ({ children }) => {
+  const { toggle, showMore, isExpanded } = useClampContext();
+
+  return showMore && !isExpanded
+    ? cloneReactElement(children, {
+        onClick: () => orchestrateClickEvents(children.props.onClick, toggle)
+      })
+    : null;
+};
+
+ShowMore.propTypes = {
+  children: PropTypes.element
+};
+
+ShowMore.defaultProps = {
+  children: <button type="button">More</button>
+};
+
+export default ShowMore;
diff --git a/src/lib/text.js b/src/lib/text.js
new file mode 100644
index 0000000..452d0ba
--- /dev/null
+++ b/src/lib/text.js
@@ -0,0 +1,20 @@
+import React from "react";
+import PropTypes from "prop-types";
+import { useClampContext } from "./clamp";
+import TruncatedElement from "./truncatedElement";
+
+const TruncatedText = ({ children }) => {
+  const { lines, configElement } = useClampContext();
+
+  return (
+    <TruncatedElement lines={lines} getRef={configElement}>
+      {children}
+    </TruncatedElement>
+  );
+};
+
+TruncatedText.propTypes = {
+  children: PropTypes.element.isRequired
+};
+
+export default TruncatedText;
diff --git a/src/lib/utils/cloneReactElement.js b/src/lib/utils/cloneReactElement.js
new file mode 100644
index 0000000..daa860f
--- /dev/null
+++ b/src/lib/utils/cloneReactElement.js
@@ -0,0 +1,9 @@
+import { cloneElement } from "react";
+
+const cloneReactElement = (elem, attributes) => {
+  const clonedElement = cloneElement(elem, attributes);
+
+  return clonedElement;
+};
+
+export default cloneReactElement;
diff --git a/src/lib/utils/orchestrateClickEvents.js b/src/lib/utils/orchestrateClickEvents.js
new file mode 100644
index 0000000..88ef018
--- /dev/null
+++ b/src/lib/utils/orchestrateClickEvents.js
@@ -0,0 +1,7 @@
+const orchestrateClickEvents = (elementClick, myClick) => {
+    elementClick && elementClick();
+    myClick();
+  };
+  
+  export default orchestrateClickEvents;
+  
\ No newline at end of file